. >>> moving on, president obama george w. bush is recovering in a dallas hospital after a health scare. the former president had a stint surgically placed this morning to clear a blocked artery in his heart. the blockage was discovered yesterday during the 67-year-old's annual physical. a statement released by his office says, president bush is in high spirit, eager to return home tomorrow and resume his normal schedule on thursday. joining me now, nbc news chief medical editor dr. nancy snyderman. nancy, this sounds like good news from the president's office. you know, when we see him as a physical guy, always out, always jogging, you know, 67-year-old, but by all appearances over the years in great health, how does something like this happen? >> well, it happens, tamron, because we always pay the piper for how we've lived our lives formerly. something was found on his routine physical, whether it was an ekg change or whether he had some pain or discomfort in his jaw or his chest. something made the doctors realize he had a